From: Filipe Manana Date: Mon, 9 Dec 2024 14:54:51 +0000 (+0000) Subject: btrfs: remove no longer needed strict argument from can_nocow_extent() X-Git-Tag: v6.14-rc1~207^2~102 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6c440755244e0044b3de37c3e5b334e46b4d93a6;p=thirdparty%2Flinux.git btrfs: remove no longer needed strict argument from can_nocow_extent() All callers of can_nocow_extent() now pass a value of false for its 'strict' argument, making it redundant. So remove the argument from can_nocow_extent() as well as can_nocow_file_extent(), btrfs_cross_ref_exist() and check_committed_ref(), because this argument was used just to influence the behavior of check_committed_ref(). Also remove the 'strict' field from struct can_nocow_file_extent_args, which is now always false as well, as its value is taken from the argument to can_nocow_extent(). Reviewed-by: Qu Wenruo Signed-off-by: Filipe Manana Signed-off-by: David Sterba --- diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index aa1f55cd81b79..b2fa33911c280 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -526,7 +526,7 @@ bool btrfs_data_csum_ok(struct btrfs_bio *bbio, struct btrfs_device *dev, u32 bio_offset, struct bio_vec *bv); noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, struct btrfs_file_extent *file_extent, - bool nowait, bool strict); + bool nowait); void btrfs_del_delalloc_inode(struct btrfs_inode *inode); struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry); diff --git a/fs/btrfs/direct-io.c b/fs/btrfs/direct-io.c index a7c3e221378db..8567af46e16f6 100644 --- a/fs/btrfs/direct-io.c +++ b/fs/btrfs/direct-io.c @@ -248,8 +248,7 @@ static int btrfs_get_blocks_direct_write(struct extent_map **map, len = min(len, em->len - (start - em->start)); block_start = extent_map_block_start(em) + (start - em->start); - if (can_nocow_extent(inode, start, &len, - &file_extent, false, false) == 1) { + if (can_nocow_extent(inode, start, &len, &file_extent, false) == 1) { bg = btrfs_inc_nocow_writers(fs_info, block_start); if (bg) can_nocow = true; diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 2f9126528a017..46a3a4a4536b6 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2296,8 +2296,7 @@ static noinline int check_delayed_ref(struct btrfs_root *root, static noinline int check_committed_ref(struct btrfs_root *root, struct btrfs_path *path, - u64 objectid, u64 offset, u64 bytenr, - bool strict) + u64 objectid, u64 offset, u64 bytenr) { struct btrfs_fs_info *fs_info = root->fs_info; struct btrfs_root *extent_root = btrfs_extent_root(fs_info, bytenr); @@ -2361,11 +2360,10 @@ static noinline int check_committed_ref(struct btrfs_root *root, /* * If extent created before last snapshot => it's shared unless the - * snapshot has been deleted. Use the heuristic if strict is false. + * snapshot has been deleted. */ - if (!strict && - (btrfs_extent_generation(leaf, ei) <= - btrfs_root_last_snapshot(&root->root_item))) + if (btrfs_extent_generation(leaf, ei) <= + btrfs_root_last_snapshot(&root->root_item)) goto out; /* If this extent has SHARED_DATA_REF then it's shared */ @@ -2387,13 +2385,12 @@ out: } int btrfs_cross_ref_exist(struct btrfs_root *root, u64 objectid, u64 offset, - u64 bytenr, bool strict, struct btrfs_path *path) + u64 bytenr, struct btrfs_path *path) { int ret; do { - ret = check_committed_ref(root, path, objectid, - offset, bytenr, strict); + ret = check_committed_ref(root, path, objectid, offset, bytenr); if (ret && ret != -ENOENT) goto out; diff --git a/fs/btrfs/extent-tree.h b/fs/btrfs/extent-tree.h index 2ad51130c037e..ee62035c4a715 100644 --- a/fs/btrfs/extent-tree.h +++ b/fs/btrfs/extent-tree.h @@ -117,7 +117,7 @@ int btrfs_pin_extent_for_log_replay(struct btrfs_trans_handle *trans, const struct extent_buffer *eb); int btrfs_exclude_logged_extents(struct extent_buffer *eb); int btrfs_cross_ref_exist(struct btrfs_root *root, - u64 objectid, u64 offset, u64 bytenr, bool strict, + u64 objectid, u64 offset, u64 bytenr, struct btrfs_path *path); struct extent_buffer *btrfs_alloc_tree_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 3c00dc48b925e..4775a17c4ee14 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1023,7 +1023,7 @@ int btrfs_check_nocow_lock(struct btrfs_inode *inode, loff_t pos, &cached_state); } ret = can_nocow_extent(&inode->vfs_inode, lockstart, &num_bytes, - NULL, nowait, false); + NULL, nowait); if (ret <= 0) btrfs_drew_write_unlock(&root->snapshot_lock); else diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 283199d11642e..0965a29cf4f71 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -1837,7 +1837,6 @@ struct can_nocow_file_extent_args { /* End file offset (inclusive) of the range we want to NOCOW. */ u64 end; bool writeback_path; - bool strict; /* * Free the path passed to can_nocow_file_extent() once it's not needed * anymore. @@ -1892,8 +1891,7 @@ static int can_nocow_file_extent(struct btrfs_path *path, * for its subvolume was created, then this implies the extent is shared, * hence we must COW. */ - if (!args->strict && - btrfs_file_extent_generation(leaf, fi) <= + if (btrfs_file_extent_generation(leaf, fi) <= btrfs_root_last_snapshot(&root->root_item)) goto out; @@ -1924,7 +1922,7 @@ static int can_nocow_file_extent(struct btrfs_path *path, ret = btrfs_cross_ref_exist(root, btrfs_ino(inode), key->offset - args->file_extent.offset, - args->file_extent.disk_bytenr, args->strict, path); + args->file_extent.disk_bytenr, path); WARN_ON_ONCE(ret > 0 && is_freespace_inode); if (ret != 0) goto out; @@ -7011,8 +7009,6 @@ static bool btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr) * @orig_start: (optional) Return the original file offset of the file extent * @orig_len: (optional) Return the original on-disk length of the file extent * @ram_bytes: (optional) Return the ram_bytes of the file extent - * @strict: if true, omit optimizations that might force us into unnecessary - * cow. e.g., don't trust generation number. * * Return: * >0 and update @len if we can do nocow write @@ -7024,7 +7020,7 @@ static bool btrfs_extent_readonly(struct btrfs_fs_info *fs_info, u64 bytenr) */ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, struct btrfs_file_extent *file_extent, - bool nowait, bool strict) + bool nowait) { struct btrfs_fs_info *fs_info = inode_to_fs_info(inode); struct can_nocow_file_extent_args nocow_args = { 0 }; @@ -7077,7 +7073,6 @@ noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, nocow_args.start = offset; nocow_args.end = offset + *len - 1; - nocow_args.strict = strict; nocow_args.free_path = true; ret = can_nocow_file_extent(path, &key, BTRFS_I(inode), &nocow_args);